Liquid and gaseous fuel burner



ATTORNEY.

M. COLLMAN LIQUID AND GASEOUS FUEL BURNER Filed Jan. 10 1922 May 29, 1923.

Patented May 29, 1923.

1 MAURICE COLEMAN, or Annoneononana Assrenonon QuE-SIXTH v COLLMAN, OFIAKRON, COLRADO, ONE-SIXTH TOEMMET P, ROGER'S, OlPIDEN'K-i' i o VER, COLORADO, AND ONE-HALF T0 THE INVESTORS SECRIIEHA COMPANY,I 1 j OF DENVER, COLORADO, .A CORPORTION COLORADO. l.

` LIQUID Ann GAsE'oUs FUEL BURNER(v Application and January 1o, i922. seriaiimifseaiaa.'`

To all '107mm t may concern:

Be it known that I, MAURICE COLLMAN,

i a citizen ofthe United States, residing at Akron, inthe county of Washington and State Y' of Colorado, have invented certain new and useful Improvements in Liquid and Gaseous FuelY Burners, ofwhich the follow# ing is a specication. i

This invention' appertains to improvements in liquid and gaseous fuel burners generally, and has for its lprincipal'objectA to lprovide for a type of the same'capab'le-'of efficient operation in producing maximum heating temperatures from liquid and gaseous fuels of all classes and descriptions, either natural or artificial, Isuch as natural or manufactured gas, alcohol', crude oil, fuely `oil,`kerosene, or 'distillatesthereof."v

Another objectfof the invention is to provide fora burnenofthe class mentioned, and one of an extremely simple and comparatively inexpensive construction and 'arrangement, capable of use asa pre-heating means in welding or dissolving operations on metal and other substances, as well as a heating means yfor all" forms A'of -power boilers, domestic heating 'boilers orV plants, fblastfurnaces, and for-,any and all other lpurposes requiring the application thereto of intense and coneentrated heat for their operation at maximum eliiciency.

yith the foregoing andfother equally important :objects in View,l the invention resides in vthe certain "novel and useful construction and arrangementas will be hereinaftermore fully described,'set forth in the appended claims, and illustrated in the accompanying drawing, in which z-r' y Figure `1 is a side elevation, partly insec* tion, of' a preferred embodiment' of the burner, and, Y y

Fig. 2 is avertical Vsection taken on the line 2 2 of Fig. 1. l I

- l Referring tothe drawing, the embodiv ment of the invention as shown therein comprises a combustion or mixing chamber 10 4having thevform of an elongated tubular metal body, preferablyv having its front or upper end `11 of converging or tapered form, and its lower end provided with a pair of diametricallyarranged depending arms 12, which also converge one toward the other and support at their`free ends, ay ring-like body orv collar 13 having a `threaded bore ,.55 u line with the longitudinal axis ofthebor'e 14 passing centrally through ther'same yin of the chamber 10. I Y i The burner properor fuel supply-n'orzlz'le comprises ajstraight length of metal'istockv: Y i l,

or pipe 15 having 'its upperend threaded upwardly through the threadedboreof the collar 13, whereby to discharge directly u'p'-l ward of the' bore ofthe" combustion ori miXf ing chamber 10. This nozzleor pipe 15 -is formed to provide an'upper bore 16 anda lower bore 17, of corresponding diameters,v and lconnected one with' theother through f the medium of a restrictedbore 'or jet duct 18, the-lower boref'lfbeing offagreater lengththari the upper bore'16v and'passes downwardly through .an enlargement 19 formed `inwardly of-the lower endk of the l' burner pipe 15 and' opensoutwardlyofthe eXteriorly threaded below? thev enlargement 19 for connection to ai pipe line (not shown)v extreme lower end of the -'latter, which 'isy .i 'f

leading'from a Lsource 'of'.airr. or steam supe` ply. Curvin'g outwardly and downwardly-` from the burner nozzle orf pipe 15,'is a branch pipe 20, whiehfhas'itslaxialibiore'21l 4opening intothe upper'bore' lfat a point immediately above theupper'end vof .there- Y stricted bore or jet duct-18,. and 'thefdis-l 'o charge opening 22 of the bore21is ypreferably of arestricted diameter and.` is -inclined slightly in the upward direction of the bore or pipe'15, lconstituting a valvebody or casing, is lformed tol provide a laterally ex- 16, substantially as is show-n in Fig.2.. The,enlargementlQl of the burner nozzlev tended portion 23,' which is formed-with` an axial borev24 connecting' thelower `bore/117g` f andis formed at 4its Ainner end to provide fa conical seat 25 forthel reception .of thei'ni ner conical end of a needle valve 26 threaded :inwardly of the bore 24., vThe extended portion r23. ofthe .enlargement orfv'alvecasing,

19, is vexterior-ly threaded to-receiveth'ereon a packing nut 27, carried by the needlevalve 25, and acts vto lcompress betweenfits end and the opposed vouterv lend ofthee'xte'ndedf poration 23, apacking arranged to encirclethe latter ina mannertol prevent leakage there,- .around. The outer vfree vend of the needle -valve 25-is formed to provide -afhandle- 28, f whereby, to facilitate theV manipulationof Q Y 1,456,785 l the same forthe vcontrol of an air or steam supply J0 the burner. The lower free end of the branch pipe is arranged to have securedl thereto, in ,any suitable manner, a valve 'casing 29 having a straight axial bore or duct connecting' the bore 17, and this casingQS) is formed with an extended or offset portion 81, which, in turn, is provided with an axial bore 32 connecting' the bore or duct 30, and is formed at its inner end to provide a conical seat for the reception of the conical end of a needle valve B-l. The needle valve 34 is threaded inwardly offthebore 32 and carries a Vpacking nut 35, which is threaded onto' the' eX- tended or offset portion 31, of the valve casing` 29, and acts to compress between the opposed surfaces thereon, a packing 36,y whereby to prevent leakage offuel outwardly of the latter around the need-le valve 34. Similarly, the needle valve 34 has its outerA free end provided with a handle 37 for facilitating its manipulation in the control and regulation of the amount of fuel to be sup*- plied to the burner.

In the operation of the burner, the lower end of the nozzleorl pipe 15 is threaded, asat 38, for connection to a suitable source of air or steam supply (not shown) and the freeV end of the valve casingI 29 is similarly threaded, as `att-.39, for connection to a suitable source of fuel supply (not shown),` and for maxim-um eflicieney, the combustion or mixing chamber 10 is adjusted ont the upper end of the nozzle or pipe 15, so 1 that the lower end thereofis disposed in aplane above that of the latter, and at a distance of approximately one-third lof its diameter therefrom, as for instance, if the combustion or ini-Xing chamber 10- is two inches in diameter, then Vthe lower end of the same' will be spaced at a distance of twothirds ofv an inch" above the uppery discharge end of the burner nozzle or pipe 15. lVith the burner connected and adjusted, the nee- Vdlevalves 26 and 34 will be manipulated by lgrasping their handles 28 and 37 to admit air 'or' steam upwardly of the pipe 15 and fuel upwardly of the branch pipe 20. By

Vthe peculiar arrangement of the fuel dischargev orifice 22,. opening from the upper connected end of the' branch pipe 2O and into the upper bore 16 of the pipe 15, the fuel is drawntherefrom by the suction or vacuum effects created by the stream of air or steam as it discharges withA force or great velocity upwardly of thel restricted bore or duct 18,1and. past the orifice'QQ, when the fuel mixturey is'ej'ected from the upper end of the nozzle or pipe 15 and passes centrally into the combustion or 'mixing chamber 10, expanding into the' form of a' very line spray for the purpose. Ignition of the fuel is preferably accomplished in the space between the upper end of the nozzle or pipe 15 and the lower end of the combustion chamber l0, and preferably by means of a piece of cotton waste dipped into the liquid fuel, since the flame of an ordinary match would probably be extinguished by Ythel effects of the fuel disch-arge before such ignition would be affected. Thus the nebulized fuel is converted into llame in the lcombustion or mixing chamber 10, and the flame issues from its upper converging end 11, while the lower open end of the same affords a free supply of air to support combustion therein. .A burner constructed according to this inven-tion can be used for practically all forms of liquid fuel by merely adjustingv the two valves 26 and 34, and correspondingly with the degreek or quantity of heat required, or the quality or kind of fuel used.

The front o1- upper end 11 of the combust-ion or mixing chamberl() is of converged or tapered form for choking or concentrating the flame in its passage therefrom, and lendsv eXtreme high efliciency to the burner for pre-heating purposes', but this convergence or taper may be dispensed with, if

desired, without seriously affecting the heating effects obtained, and, in some instances, it will be desirable to so form the upper end 11 of the mixing chamberk 10 to act yin a manner to spread the flame outwardly therefrom over a relatively large area of surface to be heated.

From the foregoing, it will be readily apparent that, while a preferred` embodiment of the burner has been described and illustrated herein in specific terms and details of construction and arrangement, various changes in and modifications of the same may be resorted to without departing from the spirit of the invention', or the scope of the claims appended hereto. f l

Having thus fullV described the invention, what is clai1ned,isf:-,` Y

1. A fuel burner comprising a tubular combustion chamber open at both ends, a fuel supply nozzle disposed rearwardly of one of' the open ends of said chamber and spaced therefrom, means for adjustably connectingl said nozzle with said.` chamber,- a Huid supply element disposed in the :same

plane as the plane of the nozzle and. further i2. A fuel burner comprising a ti'dfnilar` combustion chamber open at both ends, a fuel supply nozzle disposed rearwardly of one .of the open ends of said chamber and spaced therefrom, means for adjustably connecting said nozzle with said chamber, a, fluid supply elementl disposed in the same plane as the plane of the nozzle and further formed integral With the nozzle, said fluid supply element at its point of joinder With said nozzle provided with a restricted duct to increase the velocity of the supply of fluid to the' nozzle, a curved branch pipe having one end formed integral with said nozzle forwardly of said duct and formed with a restricted `outlet opening into said nozzle, said fuel supply element positioned in parallelism with re-y j spect to said fluid-supply element, and opening into said vPipe, means carriedl .by the fluid supply element for controlling lthe sup? ply therethrough, 'and means carried by the fuel supply element for controlling the suppl therethrough.

in testimony whereof I aiiiX myv signature hereto.` A

MAURIoEfooLLMAN. n 

